<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" 
                    v-model="queryInfo.query"
                    clearable
                    @clear="getUserList">
            <el-button slot="append" 
                       icon="el-icon-search"
                       @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <el-table :data="userlist" border>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
              <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
              </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top" :eterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
       <!-- 分页区域 -->
      <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
      </el-pagination>
    </el-card>
   <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed">
      <el-form :model="addForm" 
               :rules="addFormRules" 
               ref="addFormRef" 
               label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
      <el-button @click="addDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改信息对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed">
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
  <el-form-item label="用户名">
    <el-input v-model="editForm.username" disabled></el-input>
  </el-form-item>
    <el-form-item label="邮箱" prop="email">
    <el-input v-model="editForm.email"></el-input>
  </el-form-item>
    <el-form-item label="手机号" prop="mobile">
    <el-input v-model="editForm.mobile"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
</el-dialog>
<!-- 分配角色对话框 -->
 <el-dialog
  title="分配角色"
  :visible.sync="setRoleDialogVisible"
  width="50%"
  @close="setRoleDialogClosed">
  <div>
    <p>当前的用户:{{userInfo.username}}</p>
    <p>当前的角色:{{userInfo.role_name}}</p>
    <p>分配新角色:
      <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
  </el-select>
    </p>
  </div>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱和手机号的校验规则
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        // 合法邮箱
        return callback()
      }
      callback(new Error('请输入合法邮箱'))
    }
    // 自定义手机号规则
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return callback()
      }
      // 返回一个错误提示
      callback(new Error('请输入合法的手机号码'))
    }
    return {
      queryInfo:{
        query:'',
        pagenum:1,
        pagesize:2
      },
      userlist:[],
      total:0,
      addDialogVisible:false,
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''},
      addFormRules:{
        username:[
          {required:true, message:'请输入用户名',trigger:'blur'},
          {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
      ],
        password:[
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度需要在6到15个字符之间', trigger: 'blur' }
        ],
        email:[
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          {validator:checkMobile,trigger:'blur'}
        ]
      },
      editDialogVisible:false,
      editForm:{},
      editFormRules:{
        email:[
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          { required: true, message: '请输入用户手机号码', trigger: 'blur' },
          {validator:checkMobile,trigger:'blur'}
        ]
      },
      setRoleDialogVisible:false,
      userInfo:{},
      rolesList:[],
      selectedRoleId:''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList(){
      const { data : res } = await this.$http.get('users',{params:this.queryInfo})
      if(res.meta.status !==200) {return this.$message.error('获取用户列表失败')}
      this.$message.success('获取用户列表成功！')
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res);
    },
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    async userStateChanged(userinfo){
     const{ data :res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if(res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    addUser(){
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return
        const {data: res} = await this.$http.post('users',this.addForm)
        if(res.meta.status !== 201){
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')

        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 修改用户信息
    async showEditDialog(id){

      const {data: res} = await this.$http.get('users/' + id)
      if(res.meta.status !== 200){
      return this.$message.error('查询用户信息失败')
    }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    editUserInfo(){
      // validate是预校验函数
      this.$refs.editFormRef.validate(async valid =>{
        if(!valid) return
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {
          email:this.editForm.email,
          mobile:this.editForm.mobile
        })
        if(res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功！')
      })
    },
    async removeUserById(id){

      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户及信息, 是否继续?', '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => {return err})
        // 此时点取消或者删除按钮会返回对应的字符串cancel、confirm
        // 可以通过判断此时拿到结果是否等于字符串判断取消或者删除
        if(confirmResult !== 'confirm'){
          return this.$message.info('已取消删除')
        }
        // 删除用户信息的操作
       const {data: res} = await this.$http.delete('users/' + id)
       if(res.meta.status !== 200){
         return this.$message.error('删除用户失败！')
       }
       this.$message.success('删除用户成功！')
       this.getUserList()
    },
    async setRole(userInfo){
      this.userInfo = userInfo
      // 获取角色的列表
      const{data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200){
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    async saveRoleInfo(){
      if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色！')
      }

     const {data: res} =await this.$http.put(`users/${this.userInfo.id}/role`,
      {rid:this.selectedRoleId})
      if(res.meta.status !== 200){
        return this.$message.error('分配角色失败！')
      }
      this.$message.success('分配角色成功')
      this.getUserList()
      this.setRoleDialogVisible =false
    },
    setRoleDialogClosed(){
      this.selectedRoleId = '',
      this.userinfo= ''
    }
  },
}
</script>

<style lang="less" scoped>
  .el-table{
    margin-top: 15px;
    font-size: 13px;
  }
  .el-pagination{
    margin-top: 15px;
  }
</style>